I have a very small personal collection of music and enjoy using subscription services because I have a broad range of tastes (classic rock, christian, jazz, country, etc.) and enjoy trying out lots of different genres. I used the Yahoo! Music service for a couple of years on my mobile phones and devices (it worked on Nokia Nseries and Windows Mobile devices). I tried the Zune Pass music subscription a couple of times in the past, but never went longer than a couple of months because I stopped carrying my Zune. The new deal lets you keep 10 songs per month (about a US$10 value) for the same US$14.99 monthly subscription fee (I pay tax too because I am in Washington State with Microsoft). Still, if I can keep DRM-free tracks each month and build up my collection then I am happy.
Now, if Microsoft could add Zune support to Windows Mobile then I would be extremely happy to take my music with me everywhere. For now, I will use my 4GB Black Zune to listen to music.